Guided by the positions of the OH masers in region F, at the beginning of the first observing run, a raster map was observed to find the position of strongest methanol emission in the molecular F region. Figure REF  shows an integrated intensity map of the CH3OH (\(J\)  = \(6_{0}\) –\(5_{0}\,A^+\) ) transition on a 5 \(\times \)  5 grid (measured with a \(10{}\)  spacing) centered at an offset of \((10{},-30{})\)  from the center of the CO \(J\)  = 3–2 map of the W28 F region presented by [1]}, which is at
\((\alpha ,\delta )_{{\rm J}2000}\) 
\(= 18^{\rm h}01^{\rm m}51\unknown. {.}^{\rm s}8\) , \({-23;18;59}\) . The methanol peak thus is located at \((\alpha ,\delta )_{{\rm J}2000}\)  \(= 18^{\rm h}01^{\rm m}52\unknown. {.}^{\rm s}5\) , \({-23;19;29}\) . All subsequent pointed observations were then carried out towards this peak location of the methanol emission.
